Alexis Olympia is only 18 months old, but she’s already learning the ins and outs of donating her belongings for a good cause thanks to her mom.

On Thursday at 12 p.m. EST, Serena Williams will be adding 36 items from her baby girl’s closet to her Poshmark account for purchase, further expanding the athlete’s Posh Closet for Charity.

Fans of the superstar tennis player and her daughter can snag adorable pint-sized pieces that range from a tracksuit, three dresses (including one Burberry checkered frock), Gucci sneakers, overalls and even a T-shirt featuring her mom in the middle of a tennis match.

Just like Williams’ own pieces (which sold out immediately last month), all proceeds from the sale of Olympia’s clothes will go to her Yetunde Price Resource Center, whose mission is to “offer trauma-informed programs that promote individual and community-wide healing and resiliency.”

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Serena Williams’ Daughter Wears an Adorable Mini Version of Her Mom’s Tulle U.S. Open Dress

Olympia is already taking after her fashion-forward mom. In December, Williams, 37, told PEOPLE at the launch of her L.A. pop-up store for The Serena Collection that she’s saving her “whole shoe closet” for her daughter.

“We don’t make shoes yet in the collection but my whole shoe closet is for her and that’s why I buy so many,” the tennis pro told PEOPLE at the event, which was also attended by Williams’ husband Alexis Ohanian.

Baby Olympia has shown off many an adorable outfit on social media. In October, she even donned the white T-shirt with the picture of her mom on it that will be up for sale on Thursday!

When asked in her December conversation with PEOPLE whether she’s also putting aside any of the clothing items from her new line, which launched earlier in 2018, Williams replied, “Oh, absolutely.”

Referencing a pink sweater that proudly proclaims “I Am Beautiful I Am Strong,” the mother of one said, “I’m definitely saving that for her.”

Olympia’s clothes will be available for purchase on Williams’ Poshmark closet on Thursday at 12 p.m. EST.